The study highlights the importance of photovoltaic solar energy as a viable alternative for the Archipelago of San Andrés, Providencia, and Santa Catalina in response to the current 99% dependence on fossil sources, especially diesel. There is a need to diversify the energy matrix and reduce associated costs, including significant subsidies. The implementation of renewable sources is considered crucial to achieve sustainable development goals and improve energy autonomy, in addition to mitigating environmental impacts. The study proposes a detailed cost-benefit analysis of implementing a solar photovoltaic system, considering the return on investment and the savings in monthly energy payments for different user segments, classified into four clusters: strata 1 and 2, strata 6, commercial, and official. This financial evaluation is considered essential to ensure the economic viability of the project and maximize its positive impact on the region.